Systems and methods for maintaining an industrial lift truck within defined bounds
First Claim
1. A system for maintaining a lift truck within defined bounds, the system comprising:
- a sensor to sense a dynamic lift truck property and to provide a feedback signal corresponding to the sensed lift truck property;
a controller, the controller to receive the feedback signal and to analyze the feedback signal, and based on the analyzed feedback signal, the controller to control at least one lift truck performance parameter that maintains the lift truck within defined bounds, the defined bound including a three-dimensional parameter and a two-dimensional parameter,wherein the defined bound comprises an allowable deviation map, the allowable deviation map defining an envelope of allowable travel deviation from an intended lift truck path, the allowable deviation map is definable by a user.
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Abstract
Systems and methods maintain a lift truck within defined bounds. A controller analyzes actual and/or predicted lift truck behavior, and based on the analyzed lift truck behavior, the controller control at least one lift truck performance parameter. The performance parameter is controlled to maintain the lift truck center of gravity within a stability map, the stability map to define a three-dimensional range of center of gravity positions that maintains lift truck stability. The performance parameter is also controlled to maintain an intended path of the lift truck within an allowable deviation map, the allowable deviation map defining a two-dimensional envelope of allowable lift truck travel deviation from the intended path of the lift truck.
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Citations
20 Claims
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1. A system for maintaining a lift truck within defined bounds, the system comprising:
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a sensor to sense a dynamic lift truck property and to provide a feedback signal corresponding to the sensed lift truck property; a controller, the controller to receive the feedback signal and to analyze the feedback signal, and based on the analyzed feedback signal, the controller to control at least one lift truck performance parameter that maintains the lift truck within defined bounds, the defined bound including a three-dimensional parameter and a two-dimensional parameter, wherein the defined bound comprises an allowable deviation map, the allowable deviation map defining an envelope of allowable travel deviation from an intended lift truck path, the allowable deviation map is definable by a user. - View Dependent Claims (2, 3, 4, 5)
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6. A system for controlling a lift truck behavior, the system comprising:
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a controller, the controller to analyze at least one of actual and predicted lift truck behavior, and based on the analyzed lift truck behavior, the controller to control at least one lift truck performance parameter; the performance parameter controlled to maintain the lift truck center of gravity within a stability map, the stability map to define a three-dimensional range of center of gravity positions that maintain lift truck stability; and the performance parameter controlled to maintain an intended path of the lift truck within an allowable deviation map, the allowable deviation map defining a two-dimensional envelope of allowable lift truck travel deviation from the intended path of the lift truck, wherein the allowable deviation map or the stability map is definable by a user. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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15. A system for controlling a lift truck performance parameter, the system comprising:
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an operator input device, the operator input device to provide a command to control at least one of steering and acceleration; a controller, the controller to receive the command to control the at least one of steering and acceleration, and the controller to receive a signal of operating conditions, the controller to analyze the command and the signal, and based on the analyzed command and analyzed signal, the controller to control at least one lift truck performance parameter; the performance parameter controlled to maintain the lift truck center of gravity within a stability map, the stability map to define a three-dimensional range of center of gravity positions that maintain lift truck stability; and the performance parameter controlled to maintain an intended lift truck path within an allowable deviation map, the allowable deviation map defining an envelope of allowable travel deviation from the intended lift truck path, wherein the allowable deviation map or the stability map is definable by a user. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification